JP6702999B2 - Work vehicle - Google Patents

Description

The present invention relates to a work vehicle.

In a work vehicle such as a wheel loader or a hydraulic excavator, a configuration is disclosed in which a console box is arranged on the side of a driver's seat and an operation lever is provided in the console box (see, for example, Patent Document 1).
In the hydraulic excavator disclosed in Patent Document 1, the console box is located on the front side when the gate lock lever is arranged at the shutoff position, and the console box is located on the rear side when the gate lock lever is arranged at the open position. Has been done.

The operator gets on and off from the entrance/exit with the console box arranged at the rear side.

JP 2012-127137 A

(Problems to be solved by the invention)
However, since the movement distance of the console box is short, there are cases where the console box interferes and it is difficult for the operator to get on and off.
In addition, it is possible to move the console box by sliding it backward a lot so that the operator can easily move up and down, but if the inner wall of the cab is formed near the rear of the driver's seat, only a small amount of console box can be used. It is not possible for the operator to get on and off, as it cannot slide.

An object of the present invention is to provide a work vehicle that is easy to get on and off, taking into consideration the problems of the conventional work vehicle.
(Means for solving the problem)
A work vehicle according to a first aspect of the present invention includes a console box and a support portion. The console box is arranged on the side of the driver's seat and is rotatable in the front-rear direction. The support portion has a rotating shaft arranged below the console box along the left-right direction, and rotates the console box around the rotating shaft from the horizontally arranged operation position and backward from the operation position. It is rotatably supported between the retracted position and the inclined position. The rotation shaft is arranged in front of the center in the front-rear direction of the console box arranged in the operation position. The horizontal space between the front end and the rear end of the console box arranged at the retracted position is shorter than the space between the front end and the rear end of the console box arranged at the operation position in the horizontal direction.

In this way, by rotating the console box rearward so that the horizontal distance between the front end and the rear end of the console box is shorter in the retracted position than in the operating position, the front end of the console box moves largely backward. it can. Therefore, even if there is an entrance/exit to the side of the driver's seat, the operator can easily get on and off.
A work vehicle according to a second aspect of the present invention is the work vehicle according to the first aspect of the present invention, wherein the rotating shaft is arranged in front of a center of the console box arranged at the operation position in the front-rear direction.

In this way, since the rotating shaft is arranged in front of the center in the front-rear direction of the console box arranged at the operation position, when the console box rotates, the front end of the console box moves only a small amount upward. do not do. Therefore, the console box does not easily obstruct the entry and exit of the operator at the retracted position, and the operator can easily get on and off the board. Further, when the console box rotates, only a small amount of its rear end moves backward. Therefore, even when the inner wall of the cab is near the rear of the driver's seat, the operator can easily get on and off.

A work vehicle according to a third aspect of the present invention is the work vehicle according to the first or second aspect of the present invention, further including an operating member and a transmission section. The operating member is arranged on the upper side near the front end of the console box. The transmission unit is arranged from below the front end of the console box toward the floor of the driver's seat and transmits the operation by the operation member to the operation target. The transmission unit rotates about the floor-side end as a fulcrum while expanding and contracting as the console box rotates from the operating position to the retracted position.

As a result, the console box to which the transmission unit that transmits the operation from the operation member is connected can be rotated backward.
Further, since the rotating shaft is arranged in front of the center in the front-rear direction of the console box arranged in the operation position, both the transmitting portion and the rotating shaft are arranged near the front of the console box. It is possible to reduce the change in the length of the transmission portion due to the rotation of the box.

That is, in a side view, since the position of the rotation axis of the console box and the position of the end portion which is the rotation fulcrum of the transmission unit are different, when the transmission unit rotates as the console box rotates, the transmission unit rotates. Will vary in length. However, by disposing both the transmission unit and the rotation shaft in front of the console box, the amount of rotation of the transmission unit due to the rotation of the console box is reduced, so that the change in the length of the transmission unit can be suppressed. it can.

A work vehicle according to a fourth aspect of the present invention is the work vehicle according to the third aspect of the present invention, wherein the rotation shaft is arranged within a rotation range of the transmission portion in a side view.
Further, by disposing the rotation shaft within the rotation range of the transmission portion in a side view, the expansion/contraction width of the expansion/contraction portion can be further reduced.
A work vehicle according to a fifth aspect of the present invention is the work vehicle according to the third aspect of the present invention, wherein the transmission portion is arranged in front of the rotation shaft in a state where the console box is arranged at the operation position. .

In this way, both the transmission part and the rotation shaft are arranged in front of the console box, and the expansion/contraction width of the expansion/contraction part can be further reduced.
A work vehicle according to a sixth aspect of the present invention is the work vehicle according to the third aspect of the present invention, which includes a front frame, a rear frame, a hydraulic actuator, and a control valve. The hydraulic actuator is arranged across the front frame and the rear frame, and changes the steering angle of the front frame with respect to the rear frame. The control valve controls the oil supplied to the hydraulic actuator. The operation member is a joystick lever. The operation target is the control valve.

As a result, the console box provided with the joystick lever for operating the steering angle can be rotated so that the front end of the console box largely moves rearward.
(The invention's effect)
According to the present invention, it is possible to provide a work vehicle that is easy to get on and off.

The side view of the wheel loader in the embodiment concerning the present invention. The top view which shows the structure in the cab of FIG. The left side view of FIG. (A) The side view which shows the state which removed the side surface of the cab from FIG. 3, (b) The arrow sectional drawing between EE' of FIG. 4 (a). The front view of the internal structure of the cab of FIG. The top view which shows the state which the console box rotated to the back from the state of FIG. The left view of FIG. The side view which shows the state which removed the side surface of the cab from FIG. The side view which shows the state in which the console box is arrange|positioned at the operation position and the retracted position.

A wheel loader according to an embodiment of the present invention will be described below with reference to the drawings.
(Embodiment 1)
<1. Composition>
(1-1. Outline of wheel loader configuration)
FIG. 1 is a schematic diagram showing the configuration of the wheel loader 1 of this embodiment. The wheel loader 1 of the present embodiment mainly includes a vehicle body frame 2, a working machine 3, a pair of front tires 4, a cab 5, an engine room 6, a pair of rear tires 7, and a pair of steering cylinders 8. ing.

In the present embodiment, the front, rear, left, and right directions mean the front, rear, left, and right directions as seen from the operator seated on the driver's seat 30 (described later) in the cab 5. The work machine 3 is used for loading and unloading earth and sand.
The vehicle body frame 2 is a so-called articulated type, and has a front frame 11, a rear frame 12, and a connecting shaft portion 13. The front frame 11 is arranged in front of the rear frame 12. The connecting shaft portion 13 is provided at the center in the vehicle width direction, and connects the front frame 11 and the rear frame 12 to each other in a swingable manner. The pair of front tires 4 are attached to the left and right of the front frame 11. The pair of rear tires 7 are attached to the left and right of the rear frame 12.

The work machine 3 is driven by hydraulic oil from a work machine pump (not shown). The work machine 3 includes a boom 14, a bucket 15, a lift cylinder 16, and a bucket cylinder 17. The boom 14 is attached to the front frame 11. The bucket 15 is attached to the tip of the boom 14.
The lift cylinder 16 and the bucket cylinder 17 are hydraulic cylinders. One end of the lift cylinder 16 is attached to the front frame 11, and the other end of the lift cylinder 16 is attached to the boom 14. The boom 14 swings up and down due to the expansion and contraction of the lift cylinder 16. One end of the bucket cylinder 17 is attached to the front frame 11, and the other end of the bucket cylinder 17 is attached to the bucket 15 via a bell crank 18. As the bucket cylinder 17 expands and contracts, the bucket 15 swings up and down.

The pair of steering cylinders 8 are arranged on the left and right of the connecting shaft portion 13 in the vehicle width direction, and are attached to the front frame 11 and the rear frame 12, respectively. By changing the flow rate of the oil supplied to the pair of steering cylinders 8, the steering angle of the front frame 11 with respect to the rear frame 12 is changed, and the traveling direction of the wheel loader 1 is changed.

The cab 5 is mounted on the rear frame 12, and inside thereof, a steering wheel 37 for steering operation, a joystick lever 32 (see FIG. 2 described later), a lever for operating the working machine 3, and various Display device and the like are arranged. The engine room 6 is arranged on the rear frame 12 on the rear side of the cab 5 and houses the engine.

(1-2. cab)
FIG. 2 is a top view of the cab 5. FIG. 3 is a partial side view of the cab 5. As shown in FIG. 2, the cab 5 has a substantially hexagonal shape in a top view and includes a front surface 21, a right inclined surface 22, a right side surface 23, a left inclined surface 24, a left side surface 25, and a back surface 26. Have The front surface 21 and the back surface 26 are parallel to each other and are arranged along the left-right direction (see arrow Y in FIG. 2). The right side surface 23 is arranged from the right end of the back surface 26 toward the front. The right inclined surface 22 is arranged to be inclined with respect to the front-rear direction (see arrow X in FIG. 2) and is provided between the front end of the right side surface 23 and the right end of the front surface 21. The left side surface 25 is arranged from the left end of the back surface 26 toward the front. The left inclined surface 24 is inclined with respect to the front-rear direction and is provided between the front end of the left side surface 25 and the left end of the front surface 21. The right sloping surface 22 and the left sloping surface 24 are arranged so that the interval becomes narrower toward the front. The right sloping surface 22 and the left sloping surface 24 are arranged to be inclined in the front-rear direction in order to avoid interference with the front frame when steering.

An entrance 27 is formed at a position in front of the left side surface 25, and the door 27 shown in FIG. 1 is provided at the entrance 27.
(1-3. Internal structure of cab)
FIG. 4A is a diagram showing a state in which the left side surface 25 is removed from FIG.
Inside the cab 5, a driver's seat 30, a console box 31, a joystick lever 32, a link part 33, an armrest 34, a support part 35, a turning lever 36, a steering wheel 37 (see FIG. 2) and the like are provided. ..

(A) Driver's Seat and Steering Wheel As shown in FIG. 2, the driver's seat 30 is arranged substantially at the center of the right side surface 23 and the left side surface 25. The driver's seat 30 is arranged substantially at a position facing the entrance 27. As shown in FIG. 4A, the driver's seat 30 has a backrest portion 30a, a seat surface portion 30b, and a lower frame 30c below the seat surface portion 30b (see FIG. 5, which will be described later). A spring (not shown) is arranged on the lower side.

The steering wheel 37 is operated by an operator when changing the steering angle of the front frame 11 with respect to the rear frame 12 during movement or the like. As shown in FIG. 2, the steering wheel 37 is arranged in front of the driver's seat 30 and between the right inclined surface 22 and the left inclined surface 24.
(B) Console Box The console box 31 is arranged on the left side of the driver's seat 30. It can be said that the console box 31 is arranged between the driver's seat 30 and the entrance 27. As shown in FIG. 4A, the console box 31 is formed long in the front-rear direction and is arranged substantially horizontally. Inside the console box 31, a connecting member (not shown) that connects a joystick lever 32 and a link portion 33, which will be described later, is provided. The position of the console box 31 arranged so as to be substantially horizontal as shown in FIG. 4A is the operation position P1. The operation position P1 is the position of the console box 31 when the operator sits in the driver's seat 30 and operates the joystick lever 32.

(C) Joystick Lever As shown in FIG. 4A, the joystick lever 32 is provided on the upper side in the vicinity of the front end 31a of the console box 31 so as to project upward.
The joystick lever 32 is used during operations such as loading and carrying earth and sand. The steering angle of the front frame 11 with respect to the rear frame 12 is changed by rotating the joystick lever 32 in the left-right direction.

(D) Link Part The link part 33 is a universal joint and has a first joint part 41, a second joint part 42, and a stretchable part 43, as shown in FIG. 4( a ). The first joint portion 41 and the second joint portion 42 are arranged at both ends of the expandable portion 43. The expandable part 43 is composed of an outer cylinder 43a and an inner cylinder 43b, and the outer cylinder 43a and the inner cylinder 43b are spline-coupled.

FIG. 4B is an arrow cross-sectional view taken along the line EE′ of FIG. As shown in FIG. 4B, tooth-shaped grooves are formed on the inner circumference of the outer cylinder 43a, and tooth-shaped grooves that fit with the tooth-shaped grooves of the outer cylinder 43a are formed on the outer circumference of the inner cylinder 43b. Are formed. Each groove is formed along the longitudinal direction. With such a configuration, the outer cylinder 43a and the inner cylinder 43b are fixed to each other around the central axis F, and the operation of the joystick lever 32 can be transmitted. Further, the outer cylinder 43a and the inner cylinder 43b can move in the direction along the axis of the central axis F and can expand and contract.

The first joint section 41 is attached to the lower side of the console box 31, and is connected to the joystick lever 32 by a connecting member (not shown). The second joint portion 42 is inserted and attached to the floor surface 5 a of the cab 5.
The link portion 33 is covered with a cover C (see the dotted line).
Further, the second joint portion 42 of the link portion 33 is connected to the pilot valve 19 as shown in FIG. The operation of the joystick lever 32 is transmitted to the pilot valve 19 via the link portion 33, and the pilot pressure input to the steering valve 20 is adjusted. The steering valve 20 adjusts the flow rate of oil supplied to the steering cylinder 8 according to the input pilot pressure. As described above, the steering operation can be performed by operating the joystick lever 32.

(E) Armrest The armrest 34 is disposed on the upper side of the console box 31 via a bracket 38, as shown in FIG. The console box 31 is used as an elbow rest of an operator seated in the driver's seat 30 in a state where the console box 31 is arranged at the operation position P1.
(F) Support part FIG. 5 is a view of the vicinity of the driver's seat 30 as viewed from the front side. In FIG. 5, the link part 33 and the cover C are present in front of the support part 35, but the support part 35 is shown by a solid line and the link part 33 and the cover C are shown by a dotted line for the sake of explanation.

The support portion 35 mainly has a fixed frame 50, a first rotating member 51, a second rotating member 52, a first shaft portion 53, and a second shaft portion 54.
As shown in FIG. 4A, the fixed frame 50 is arranged below the console box 31 and behind the link portion 33. As shown in FIG. 5, the fixed frame 50 is provided so as to project from the lower frame 30c of the driver's seat 30 to the left side surface side. The fixed frame 50 includes a first fixed portion 61, a second fixed portion 62, a first shaft support portion 63, and a second shaft support portion 64.

The first fixing portion 61 is a portion that is connected to the lower frame 30c and projects substantially horizontally from the lower frame 30c to the left side surface side. The second fixing portion 62 has a substantially U shape, and is connected to the end of the first fixing portion 61 on the left side surface side. The first shaft support portion 63 is fixed to the upper side of the first fixing portion 61. The first shaft support portion 63 has two plate-shaped portions 63a arranged so as to face each other with a predetermined gap in the left-right direction. Holes are formed in each of the two plate-shaped portions 63a along the left-right direction. The first shaft support portion 63 rotatably supports the first rotation member 51 by inserting the first shaft portion 53, which is fixed to the first rotation member 51 described later, into these holes. .. The second shaft support portion 64 is provided at the upper end portion 62a on the left side surface side of the second fixing portion 62. The second shaft support portion 64 has two plate-shaped portions 64a arranged so as to face each other with a predetermined gap in the left-right direction. Holes are formed in the two plate-shaped portions 64a along the left-right direction. The second shaft support portion 64 rotatably supports the second rotation member 52 by inserting the second shaft portion 54, which is fixed to the second rotation member 52 described later, into these holes. ..

The first rotating member 51 and the second rotating member 52 are formed by bending plate-shaped members, respectively, and are arranged between the console box 31 and the fixed frame 50 side by side in the left-right direction. ing. Further, the first rotating member 51 and the second rotating member 52 are formed by bending such that the distance between the first rotating member 51 and the second rotating member 52 is wider at the lower end than at the upper end.
The upper ends of the first rotating member 51 and the second rotating member 52 are fixed to the frame 31f of the console box 31. The lower end of the first rotating member 51 is inserted between the two plate-shaped portions 63 a of the first shaft support portion 63. The lower end of the second rotating member 52 is inserted into the two plate-shaped portions 64 a of the second shaft support portion 64.

The first shaft portion 53 is fixed to the lower end of the first rotating member 51. The first turning member 51 projects downward in the left-right direction. The first shaft portion 53 is inserted into the hole of the plate-shaped portion 63 a of the first shaft support portion 63. The second shaft portion 54 is fixed to the lower end of the second rotating member 52. The second rotating member 52 projects downward in the left-right direction. The second shaft portion 54 is inserted into the hole of the plate-shaped portion 64 a of the second shaft support portion 64. The first shaft portion 53 and the second shaft portion 54 are coaxially arranged along the left-right direction.

The first rotating member 51 and the second rotating member 52 can rotate with respect to the fixed frame 50 about the first shaft portion 53 and the second shaft portion 54. The first rotating member 51 and the second rotating member 52 are fixed to the lower frame 30c of the console box 31. Therefore, the console box 31 is also rotated by the rotation of the first rotating member 51 and the second rotating member 52.
The rotation axis A of the console box 31 is the center of the first shaft portion 53 and the second shaft portion 54, and is shown in FIGS. 4(a) and 5. As shown in FIG. 4A, the rotation axis A is located below the console box 31 and in front of the center (see the line M) between the front end 31a and the rear end 31b of the console box 31. It is arranged.

(G) Rotating Lever The rotating lever 36 is gripped by the operator when rotating the console box 31.
The rotating lever 36 is connected to the lower side of the console box 31. When the operator grips the turning lever 36 and turns it backward, the console box 31 is turned backward as shown in FIGS. 6 to 8 described later.

<2. Rotation motion>
Next, the rotating operation of the console box 31 of the wheel loader 1 according to the embodiment of the present invention will be described.
The console box 31 shown in FIGS. 4A and 5 is arranged substantially horizontally, and is arranged at an operation position P1 where the operator operates the joystick lever 32. In this state, when the operator grips the turning lever 36 and turns backward as shown by the arrow B in FIG. 4A, the console box 31 is arranged at the retracted position P2. The console box 31 may be locked at the operation position P1 and the retracted position P2.

FIG. 6 is a top view of the console box 31 in the retracted position P2. FIG. 7 is a left side view of FIG. FIG. 8 is a diagram showing a state in which the left side surface 55 of the cab 5 is removed from FIG. 7.
As shown in FIGS. 6 to 8, the console box 31 is arranged at the retracted position P2 that is moved rearward (in the direction of arrow B in FIG. 4A) about the rotation axis A from the operation position P1.

At the operation position P1, the console box 31 has substantially the same height at its front end 31a and rear end 31b, and is arranged substantially horizontally, as shown in FIG. 4(a). On the other hand, at the retracted position P2, as shown in FIG. 8, the console box 31 is diagonally arranged. Specifically, the console box 31 has a rear end 31b located below the front end 31a.
FIG. 9 is a diagram showing the console box 31 at the operation position P1 and the retracted position P2 at the same time. In FIG. 9, the console box 31 at the retracted position P2 is shown by a chain double-dashed line. As shown in FIG. 9, the horizontal distance L2 between the front end 31a and the rear end 31b of the console box 31 at the retracted position P2 is smaller than the horizontal distance L1 between the front end 31a and the rear end 31b of the console box 31 at the operation position P1. Is also getting shorter. In other words, in the top view, the distance L2 between the front end 31a and the rear end 31b of the console box 31 at the retracted position P2 is shorter than the distance L1 between the front end 31a and the rear end 31b of the console box 31 at the operation position P1. I can say.

Further, the link part 33 also rotates on the first joint part 41 side around the second joint part 42 in accordance with the rotation of the console box 31. At this time, since the first joint portion 41 rotates about the rotation axis A, the outer cylinder 43a moves upward with respect to the inner cylinder 43b, and the expandable portion 43 extends. That is, as shown in FIG. 9, the link portion 33 in the state in which the console box 31 is arranged in the retracted position P2 is longer than the length K1 of the link portion 33 in the state in which the console box 31 is arranged in the operation position P1. The length K2 is longer.

Furthermore, in a side view, as shown in FIG. 9, the rotation axis A is provided within the rotation range D of the link portion 33.
After turning the console box 31 rearward in this manner, the operator gets in and out of the wheel loader 1 through the getting in and out port 27.
By rotating the console box 31 rearward, as shown in FIGS. 6 and 7, as compared with FIGS. 2 and 3, the console box 31 can be retracted from the left front end of the seat surface portion 30b of the driver's seat 30. That is, since a space can be secured on the left side of the front end of the seat surface portion 30b of the driver's seat 30, the operator can easily get in and out of the entrance 27 formed on the left side of the driver's seat 30.

<3. Features>
(3-1)
In the cab 5 of the wheel loader 1 (an example of a work vehicle) of the present embodiment, a console box 31 and a support portion 35 are provided. The console box 31 is arranged on the side of the driver's seat 30 and is rotatable in the front-rear direction. The support part 35 has a rotation axis A arranged below the console box 31 along the left-right direction, and the operation position P1 and the operation position where the console box 31 is horizontally arranged with the rotation axis A as a center. A retractable position P2, which is a position pivoted rearward from P1 and is inclined, is rotatably supported. As shown in FIG. 9, the space L2 in the horizontal direction between the front end 31a and the rear end 31b of the console box 31 arranged at the retreat position P2 is equal to the space between the front end 31a and the rear end 31b of the console box 31 arranged at the operation position P1. It is shorter than the interval L1 in the horizontal direction.

By rotating the console box 31 rearward so that the distance L2 becomes shorter than the distance L1, the front end 31a of the console box 31 can be largely moved rearward. Therefore, as shown in FIGS. 6 and 7, the operator can easily get on and off even if there is the entrance 27 at the side of the driver's seat 30.
(3-2)
In the wheel loader 1 (an example of a work vehicle) of the present embodiment, the rotation axis A is located in front of the center of the console box 31 arranged at the operation position P1 in the front-rear direction, as shown in FIG. 4A. It is located in.

As described above, since the rotation axis A is arranged in front of the center (see the line M shown in FIG. 4A) in the front-rear direction of the console box 31 arranged at the operation position P1, the console box 31 is provided. When 31 rotates, its front end 31a moves only a small amount upward. Therefore, the console box 31 does not easily obstruct the entry and exit of the operator at the retracted position P2, and the operator can easily enter and exit. Further, when the console box 31 rotates, the rear end 31b moves only a small amount rearward. Therefore, even when the back surface 26 of the cab 5 is near the rear of the driver's seat 30, the operator can easily get on and off.

(3-3)
In the cab 5 of the wheel loader 1 (an example of a working vehicle) of the present embodiment, as shown in FIG. 4A, a joystick lever 32 (an example of an operation member) and a link part 33 (an example of a transmission part). ) And are further provided. The joystick lever 32 is arranged on the upper side in the vicinity of the front end 31 a of the console box 31. The link part 33 is arranged from below the front end 31a of the console box 31 toward the floor surface 5a of the driver's seat 30 and transmits an operation by the joystick lever 32 to the pilot valve 19 (an example of an operation target). The link portion 33 expands and contracts in accordance with the rotation of the console box 31 from the operation position P1 to the retracted position P2, and rotates about the second joint portion 42 (an example of the end portion on the floor surface side) as a fulcrum.

As a result, the console box 31 to which the link portion 33 for transmitting the operation from the joystick lever 32 is connected can be rotated backward.
Further, since both the link portion 33 and the rotation axis A are arranged in front of the console box 31 as described above, the change in the length of the link portion 33 due to the rotation of the console box 31 can be reduced.

That is, in a side view, the position of the rotation axis A of the console box 31 and the position of the second joint portion 42, which is the rotation fulcrum of the link portion 33, are different, so that the link portion 33 is rotated with the rotation of the console box 31. When is rotated, the length of the link portion 33 is changed. However, since the link portion 33 and the rotation axis A are both arranged near the front of the console box 31, the rotation amount of the link portion 33 due to the rotation of the console box 31 is reduced. It is possible to suppress the change in size.

(3-4)
In the wheel loader 1 of the present embodiment, as shown in FIG. 9, the rotation axis A is arranged within the rotation range D of the link part 33 (an example of a transmission part) in a side view.
Further, by disposing the rotation axis A within the rotation range D of the link portion 33 in a side view, the expansion/contraction width of the expansion/contraction portion 43 can be further reduced.

(3-5)
In the wheel loader 1 of the present embodiment, the link portion 33 (an example of a transmission portion) is arranged in front of the rotation axis A when the console box 31 is arranged at the operation position P1.
In this way, both the link portion 33 and the rotation axis A are arranged closer to the front of the console box 31, and the extension/contraction width of the extension/contraction portion 43 can be further reduced.

(3-6)
The wheel loader 1 of the present embodiment includes a front frame 11, a rear frame 12, a steering cylinder 8 (an example of a hydraulic actuator), and a pilot valve 19 (an example of a control valve). The steering cylinder 8 is arranged across the front frame 11 and the rear frame 12, and changes the steering angle of the front frame 11 with respect to the rear frame 12. The pilot valve 19 controls the oil supplied to the steering cylinder 8.

As a result, the console box 31 provided with the joystick lever 32 for operating the steering angle can be rotated so that the front end 31a thereof moves largely backward.
[Other Embodiments]
Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the invention.

(A)
In the wheel loader 1 of the above-mentioned embodiment, the joystick lever 32 of the console box 31 is provided as an example of the operation member, but the operation member is not limited to the joystick lever 32. Further, the operation member itself may not be provided, and if the console box 31 is provided beside the driver's seat 30, the configuration of the present embodiment can be applied.

(B)
In the wheel loader 1 of the above-described embodiment, the link portion 33 is provided and the operation of the joystick lever 32 is mechanically transmitted to the pilot valve 19, but the link portion 33 is not provided and the operation is performed electrically. It may be configured to be transmitted to. In this case, the transmission may be either wired or wireless.

(C)
In the wheel loader 1 of the above embodiment, the pilot valve 19 is provided as an example of the operation target, but the pilot valve 19 is not limited to the pilot valve 19. For example, the configuration may be such that the pilot valve 19 is not provided, the link portion 33 is connected to the steering valve 20 as an example of the operated portion, and the steering valve 20 is directly operated by the joystick lever 32.

(D)
In the above embodiment, the armrest 34 is provided on the upper side of the console box 31, but the armrest 34 may not be provided. Further, as shown in FIGS. 8 and 9, the rear end of the armrest 34 projects rearward from the rear end 31b of the console box 31, but it may be formed so as not to project.

(E)
In the above embodiment, the wheel loader is used as an example of the work vehicle, but a dump truck, a hydraulic excavator, or the like may be used.
(F)
In the above embodiment, the wheel loader 1 is used as an example of the work vehicle, and the steering wheel 37 is arranged in the cab 5. However, depending on the work vehicle, the steering wheel 37 may not be arranged. ..

INDUSTRIAL APPLICABILITY The work vehicle according to the present invention has an effect of being easy to get on and off, and is widely applicable to various work vehicles such as a wheel loader.

1 Wheel Loader 2 Body Frame 3 Working Machine 4 Front Tire 5 Cab 5a Floor 6 Engine Room 7 Rear Tire 8 Steering Cylinder 11 Front Frame 12 Rear Frame 13 Connecting Shaft 14 Boom 15 Bucket 16 Lift Cylinder 17 Bucket Cylinder 18 Bell Crank 19 Pilot Valve 20 Steering valve 21 Front surface 22 Right inclined surface 23 Right side surface 24 Left inclined surface 25 Left side surface 26 Rear surface 27 Doorway 28 Door 30 Driver's seat 30a Backrest 30b Seat surface 30c Lower frame 31 Console box 31a Front end 31b Rear end 31f Frame 32 Joystick lever 33 link part 34 armrest 35 support part 36 rotation lever 37 steering wheel 38 bracket 41 first joint part 42 second joint part 43 expansion/contraction part 43a outer cylinder 43b inner cylinder 50 fixed frame 51 first rotation member 52 second rotation Member 53 First shaft portion 54 Second shaft portion 61 First fixing portion 62 Second fixing portion 62a Upper end portion 63 First shaft supporting portion 63a Plate portion 64 Second shaft supporting portion 64a Plate portion C Cover D Rotating range L1 interval L2 interval P1 operating position P2 retracted position

Claims (5)

A console box arranged on the side of the driver's seat and rotatable in the front-back direction,
The console box has a rotating shaft arranged in the left-right direction below the console box, and the console box is rotated horizontally about the rotating shaft and backward from the operating position. A support portion that rotatably supports a retracted position that is a slanted position,
The distance in the horizontal direction of the front and rear ends of the deployed the console box to the retracted position, rather short than the distance in the horizontal direction of the front and rear ends of the deployed the console box to the operation position,
The rotating shaft is arranged in front of the center in the front-rear direction of the console box arranged in the operation position,
Work vehicle. A console box arranged on the side of the driver's seat and rotatable in the front-back direction,
The console box has a rotating shaft arranged in the left-right direction below the console box, and the console box is rotated horizontally about the rotating shaft and backward from the operating position. A support portion that rotatably supports a retracted position that is a slanted position,
The horizontal distance between the front end and the rear end of the console box arranged at the retracted position is shorter than the distance between the front end and the rear end of the console box arranged at the operation position in the horizontal direction,
An operation member arranged on the upper side near the front end of the console box,
Further comprising a transmission unit that is arranged toward the floor surface of the driver's seat from the lower side in the vicinity of the front end of the console box and that transmits the operation by the operation member to the operation target,
The transmission unit rotates while expanding and contracting with the rotation of the console box from the operation position to the retracted position, with the end on the floor surface side serving as a fulcrum.
Work vehicle. The rotation shaft is arranged within a rotation range of the transmission unit in a side view,
The work vehicle according to claim 2 . In a state where the console box is arranged at the operation position, the transmission portion is arranged in front of the rotation shaft,
The work vehicle according to claim 2 . Front frame,
Rear frame,
A hydraulic actuator that is arranged over the front frame and the rear frame and that changes a steering angle of the front frame with respect to the rear frame;
A control valve for controlling the oil supplied to the hydraulic actuator,
The operation member is a joystick lever,
The operation target is the control valve,
The work vehicle according to claim 2 .

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